Abstract
Graphical General, fast, and efficient fusion methods for the synthesis of dendrimers with 1,4-diphenylbuta-1,3-diyne at a core were developed. The synthetic strategy was employed the fusion method of the terminal alkyne via CuI/NBS/DIPEA-mediated Glaser-type coupling reaction. Glaser-type coupling reaction under CuI/NBS/DIPEA promoting system could be completed under ambient temperature without exclusion of air and moisture. The fusion of the terminal alkyne-focal Fréchet-type dendrons 3-Dm by homo-coupling of terminal alkyne lead to the formation of symmetric Fréchet-type dendrimers 4-Gm with 1,4-diphenylbuta-1,3-diyne at core. Their structure of dendrimers was confirmed by 1H- and 13C-NMR spectroscopy, IR spectroscopy, mass spectrometry, and GPC analysis.
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